Drophead-sewing-machine cabinet



T. KUNDTZ.

DROPHEAD SEWING MACHINE CABINET. APPLICATION man 00119, 918.

1,379,828; Patented May 31,1921.

1 f \u If UNETEB gTtTiFfi" PATENT @FFEQE.

THE-ODOR KUNDTZ, OF LAKEW'OOD, OHZO, ASSIG-NOB 'ro THE rnnononfxunnmz 001v:-

PANY, or CLEVELAND, care, a CORPORATION. or o DROPHEAD-SEVJING-MACHIN CABINET.

Application filed October 19, 1918. Serial No. 258,863.

To all whom it may concern Be it known that I, THnoDoR KUNDTZ, a citizen of the United States, residing at Lakewood, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Drophead-Sewing-Machine Cabinets, of which the following is a full, clear, and exact description.

This invention relates to the kind of drop head sewing machine cabinets in which a head supporting platform is hinged on a horizontal transverse axis to the table or top of the cabinet, and has a flap hinged to its free edge, said platform and flap being of such size and shape that when they are alined and in the horizontal working position they substantially fill a hole in the top of the cabinet. Associated with this head platform is mechanism by which it is raised to and held accurately in the horizontal working position referred to, or is allowed to swing downward thereby carrying the machine head attached to the platform below'the table top.

It is customary to form in the top of the head platform a recess shaped to fit the base of the sewing machine head which is to be secured to said platform. Except for the head platform these cabinets may be used with almost any sewing machine head. But different sewing machine heads have bases which are of various shapes, wherefore it frequently becomes necessary to substitute one head platform for another 1n one of these cabinets in order that it may be used with some particular head.

The chief advantage of the present invention is that it enables the quick removal of one head platform and the substitution of another having a recess of the required shape; but obviously the invention is useful in connection with such cabinets, whether or not the head platform is liable to be removed because it enables the original assembling of the cabinet to be quickly and economically made.

In the drawing, Figure 1 is a plan view of a sewing machine cabinet equipped with the invention; Fig. 2 is a bottom view of one side of the cabinet top and head platform and the parts associated therewith; Fig. 3 is a sectional side elevation of the parts shown in Fig. 2; and Fig. 4 is an enlar ed sectional view on line 41- 1 of Fig. 1.

fieferring to the parts by reference char- I acters, 10 represents the top or table of the cabinet; 12'represents a rectangular frame I which is secured uponthis table top over a rectangular opening 10 therethrough.

15 represents the head thereof. When these two are alined they are of such size and shape that "they substantially fill the hole or opening through the frame 12.

The head pivoted to the frame 12 by means of two alined pintle pins 25, the side members 12 and project inward therefrom into holes 31 m metal straps 30 which are secured in recesses in the side edges of said head platform. In the present invention both of these pintle pins may have, and oneof them must have the construction shownin F ig. 4, that 1s to say, the outer end of said pintle pin,- the part 25 that lies withinsthe frame member, is of larger diameter than the part 25 that projects inward from said frame member for engagement with said strap; and thislarge diametered part of the pintle pin is externally threaded, and has'in its outer platform; and the extension leaf hinged to the rear edge,

platform near its front edge is,

which are carried by. 12*, of the frame 12,

end a transverse slot 25 to receive a screw driver. A hole is formed. through the side member of the frame for the reception of this pintle pin, which hole is of such size that it permits the small diametered inner end thereof to pass freely through the hole but requires that the externally threaded large part of the pintle pin be screwed into said hole.

Both of these pintle pins may be formed, and connected with the side members of the frame, as above stated. It has been found, however, that if only one of such pins is used, and if the other pintle pin is permanently fixed to the frame member, it is pos sible to put in or take out a head platform by first unscrewing the threaded pintle pin. When the screw threaded pintle pin is screwed out, one may by first putting one side edge of the head in the frame, and with the hole engaging the permanent fixed pintle pin, then swing the other side of the head platform up until said head platform gets to the horizontal position and is wholly in the hole in the frame. Then the pintle pin may be screwed in until its small end enters the hole in the associated strap 30. To rein the strap move the head platform one has only to screw out this threaded pintle pin, and of course disconnect the head platform from the associated parts by which it is raised and lowered, and then reverse the stated movements of said head platform.

In the construction shown the flap 20 is under the influence of a spring 21 which, when allowed to act, will swing the flap upward with respect to the head platform. This is a very common feature of construction in drop head mechanism; and in all cases there must be some means by which, when the head platform is swung up into the horizontal working position, the flap will be compelled to assume the horizontal position in alinement with the head platform. The means shown in the drawing for so controlling the position of the flap are substantially like the means shown and described for this purpose in the application of Stark and Rehor, No. 253,170, filed Sept. 9, 1918. These means as shown in the drawing of this instant application include a metal flange 23 which is fixed to and projects laterally from each side of the flap so that it may engage with the lower surface of the adjacent side member of the frame 12 which overhangs the side of thehole in the table top for this purpose. The present invention is particularly applicable to cabinets in which these means are provided for so controlling the position of the flap, because when this construction is used for controlling tie position of the flap the head platform may be taken out and put in in the manner hereinbefore set forth.

Having described my invention, I claim: In a drop head sewing machine cabinet, the combination of a table top having a hole through it, a frame secured upon said table around said hole with one side member of the frame overhanging the edge of said hole, a head platform having a flap hinged to its rear edge which fiap carries a laterally projecting flange for engagement with the overhanging part of said frame,-said platform and flap being of such size and shape that when alined they substantially fit the hole in said frame, metal straps secured to the side edges of said head platform near the front edge thereof,each of which straps has a hole, and two alined pintle pins connected with the side members of the frame and projecting inward therefrom into the holes in said straps, one of said pintle pins having an externally screw-threaded outer endand a cylindrical inner end of smaller diameter which projects inward from said frame member, the associated side member of the frame having a hole extending entirely through it and the screw threaded part of the pintle pin having a screw threaded engagement therein when the small diametered cylindrical part thereof projects, as stated, inward from said frame member.

in testimony whereof, I hereunto my signature.

THEQDOR KUNDTZ. 

